Meta's Muse AI Agent Surpasses ChatGPT in Early Mobile Downloads and User Engagement

What Happened

Meta Platforms Inc. launched its new artificial intelligence application, Muse, which has quickly surpassed OpenAI's ChatGPT in early mobile download and daily active user metrics. According to market intelligence firm Apptopia, Muse recorded more downloads in its first twelve days on the market than ChatGPT did during its comparable initial period. This data, specifically comparing the U.S. and Canada markets, indicates a robust debut for Meta's latest AI offering. The app's performance has also been reflected in Meta's stock, which surged over 11% on Monday, September 21, 2026, following these positive reports. Muse is positioned as a personal AI agent designed to manage tasks across the web, such as filling out forms and organizing email, powered by Meta's Muse Spark family of AI models. Its rapid ascent to the top of app store charts, including becoming the No. 1 overall app on the U.S. App Store, highlights its immediate market impact.

What the Evidence Establishes

Multiple market intelligence firms corroborate Muse's strong initial performance. Apptopia's analysis, focusing on iOS data for the U.S. and Canada during the first twelve days of launch, shows Muse with 1.8 million downloads compared to ChatGPT's 1.3 million. Globally, Muse achieved 2.8 million total installs within its first 12 days. Furthermore, Apptopia reported Muse's U.S. daily active users at 642,000, significantly higher than ChatGPT's 231,000 at a similar post-launch stage. Even when narrowing the comparison to iOS alone, Muse maintained a lead with 359,000 daily active users. Separately, Sensor Tower reported that Muse accumulated 730,000 downloads over approximately five days after its September 8 launch, topping ChatGPT, Anthropic's Claude, and SpaceXAI's Grok AI during the same post-launch window. Business Insider also noted Muse's rise to the No. 1 spot on the U.S. App Store. These figures, while third-party estimates, consistently point to Muse's accelerated user acquisition compared to its prominent AI competitors.

Where the Accounts Conflict

While the overall trend of Muse's strong early adoption is consistent across reports, specific metrics and comparison methodologies vary slightly between market intelligence firms. Apptopia's data primarily focuses on a twelve-day post-launch window, comparing U.S. and Canada iOS figures for both Muse and ChatGPT to create an

Context and Stakes

Meta's aggressive push into the AI agent market with Muse represents a strategic pivot for CEO Mark Zuckerberg, aiming to diversify revenue streams beyond the company's core online advertising business. The introduction of monthly subscriptions for Muse, priced at $20 or $100 depending on usage, underscores this ambition. The company has a proven track record of leveraging its vast user base for new product launches, as seen with Instagram's Threads, which garnered over 500 million users through heavy cross-promotion within Facebook and Instagram. Muse is expected to benefit from similar integrations, including within WhatsApp, with Apptopia noting that over 95% of Muse users are also Facebook users and 63% are Instagram users. However, this launch occurs amidst heightened societal concerns regarding AI safety, cybersecurity risks, and privacy. Amazon notably blocked Muse bot access to its site, citing privacy and security risks, stating that third-party applications making purchases should "operate openly and respect service provider decisions." This contrasts with Shopify, whose CEO Tobias Lütke announced a partnership with Muse for agentic checkout, highlighting a divided industry response to AI agent integration. Meta also recently settled for $17 billion with state attorneys general over alleged harms to children from its other apps, adding a layer of scrutiny to its new data-intensive offerings.

What to Watch Next

Several key developments will shape Muse's trajectory and Meta's broader AI strategy. Investors will closely monitor Meta's official release of internal download and daily active user figures for Muse, which could further validate or adjust the third-party estimates. The effectiveness of Meta's cross-promotion strategy across its platforms, including Facebook, Instagram, and WhatsApp, will be crucial for sustaining Muse's growth beyond its initial surge. The response from competitors, particularly OpenAI, Anthropic, and SpaceXAI, regarding their own AI agent offerings and potential counter-strategies, will also be a significant factor. Furthermore, the evolving regulatory landscape around AI, data privacy, and cybersecurity will bear watching. Amazon's decision to block Muse access could set a precedent or influence other major online platforms. Any further actions by regulatory bodies or privacy advocates, especially in light of Meta's recent $17 billion settlement, could impact Muse's operational scope and public perception. The adoption rate of Muse's subscription tiers will also indicate its long-term revenue potential beyond initial free usage.

Bottom Line

Meta's Muse AI agent has achieved a remarkably strong launch, outpacing ChatGPT in key early mobile adoption metrics across downloads and daily active users in the U.S. and Canada. This performance, driven by Meta's strategic entry into the personal AI agent market and anticipated cross-platform promotion, has positively impacted Meta's stock value. The app's ability to perform tasks across the web, coupled with a subscription model, signals Meta's intent to diversify its revenue streams. However, the long-term success of Muse will depend on its ability to sustain user engagement, navigate increasing scrutiny over AI safety and data privacy, and manage competitive responses. The contrasting stances of major platforms like Amazon and Shopify regarding Muse's integration highlight the complex challenges and opportunities facing Meta's ambitious AI initiative. The initial data suggests Muse could become a significant player in the burgeoning AI agent ecosystem, but its path forward is subject to market dynamics and regulatory pressures.